Lyman hunt



Steering Appa ratus for Vessels.

AM H1070 -LIIHO GRAPH/C co, /v. floss omvs's M00535.)

deck of a vessel.

UNITED STATES LYMAN HUNT, OF BUFFALO, NEW YORK, ASSIGNOR OF ONE-HA RIGHTTO MARCUS M. DRAKE.

IMPROVEMENT IN STEERING APPARATUS FOR VESSELS Specification forming partof Letters Patent No. 138,652, dated May 6, 1873 applica-ti I I April 5,1873. l i

To all whom it may concern:

Be it known that I, LYMAN HUNT, of the city of Buffalo, in the county ofErie and State of New York, have invented certain Improvements inSteering Apparatus for Vessels, of which the following is aspecification:

My improvements relate to thatnclass of steering devices in which therudder is actuated by a horizontal screw-shaft arranged near the upperend of the rudder-post; and the invention consists of an arrangement bywhich the same screwshaft that operates the rudder is actuated by a rearsteering-wheel, or by a wheel arranged in the forward part of the vesseleither, as may be required.

In the accompanying drawing, Figure 1 is an elevation, and Fig. 2 a planview, of my improved steering apparatus.

Like letters of reference designate like parts in both of the figures.

A represents the main, and B the upper, Q is the rudder-post, and D thehorizontal steeringshaft arranged above the upper end thereof forturning the same. The shaft D is provided with a steering-wheel, E, andconnected with the rudderpost by means of any suitable mechanism. Asshown in the drawing, the latter consists of a longitudinally-dividedscrew-box or nut, the two halves, F F, of which are moved in oppositedirection between guides G by diamond shaped projections arranged on theshaft D. The movement of the boxes F F is transmitted to the rudder-postby means of bolts h projecting downwardly from the former and engagingin the slots of a crosshead, I, secured to the upper end of therudder-post. This apparatus is commonly known as the diamond screwdevice. The steeringshaft and wheel D E and mechanism connecting thesame with the rudder-post compose the aft or stern steering apparatus,all being arranged immediately above and in front of the rudder-post. Krepresents the forward steering-shaft arranged in a wheel-house near thequarters of the vessel. It is supported in bearings l, and provided witha steeringwheel, L, as usual.

blocks, which results in a corres PATENT Or M represen a drum, pulley,or chain-wheel mounted the rear wheel-shaft D, and N a similarl I chainor cable passing over both? ulleys, M and N, so as to transmit the mo;on of the forward steering-shaft K to the shaft D. The chain or cable n,u be endless, as shown in the drawing, 0 consist of two parts, the endsof which are vound upon the pulleys M and N from opp site sides. 0 0represent sheaves or rollers, b which the chain or cable a is guidedbetwe n the pulleys M and N.

I am aware that previous to m. l invention the rudder has been operatedfror a forward steering-wheel by chains or cab s passing over blocks andconnecting with, tiller or arm secured to the rudder-post This device isobjectionable, for the rea n that in sea-going vessels it necessitates te employment of an additional and indep I dent rear steering apparatus,which can be; esorted to when the forward steering apparat, s gets outof order. l

In my improved steering devic; I the chain it connects the forwardwheel-sha K directly with the rear steering mechani ju therebydispensing with the expense of th tiller and connecting parts. I

When great power is required 1 or operating the rudder it can be readilytained in my improved apparatus by increa ng the diameter of the rearchain-pulley ing the size of the forward chai pulley N, the friction ofthe operating part i being the same in all cases, while in the orc narytiller device greater power can only b1 obtained by increasing thenumber of pu ys in the uding increase of friction.. The objection bleslackmotion of the tiller is also obviate j in my improved device. 1

The entire steering apparatus rendered more firm and reliable by suprting the rear steering device, which is use in rough weather andemergencies on the ain deck,

while in the tiller device the rear steering apparatus is secured to thelighter timbers of the upper deck, as the tiller and connecting partsoccupy the space near the rudder-post forth. above the main deck.

I claim as my invention The combination, with the rudder-post, rearsteering-shaft D, and hand-wheel E, of

the pulleys -M N, forward: steering-shaft K, hand-wheel L, and chain orcable n, substantially as and for the purpose hereinbefore set LYMANHUNT. Witnesses:

JOHN J. BONNER,

WM. H. JENKINS.

